A contemporary Manhattan love triangle ends in old-fashioned homicide, and Rebecca Naomi Jones (“Passing Strange,” “American Idiot”) is pretty much flawless as the balladeer who leads us through this musical. Karen Olivo (who won a Tony for “West Side Story”), Will Swenson (“Hair”), and John Ellison Conlee (“The Full Monty”) round out the cast beautifully as the star-crossed lovers-cum-cheaters-cum-tormentors. There is some clumsy songwriting throughout, and the score, like the nineties alt-rock it seems to gesture toward, is mostly unmemorable, but the creators, Juliana Nash and Julia Jordan, should be applauded for their operatic ambitions here—the mock-verismo chamber piece is entirely sung-through, and a twist at the end is oddly satisfying. Trip Cullman directs.